Emil I have to disagree seeing comes first everything else second pure seeing with our eyes and mind without camera is the ultimate reduction, cameras and lenses are already an additional tool that hinders the visual development.

I profoundly disagree with you. The actual trick is to learn how to become a better photographer. If your mind is occupied with things like what film to use, what lens to use, or anything of that nature, it means you have less brain capacity left to focus on the actual photograph.

What is it, in terms of 'seeing', that you think is made better by adding more equipment to the camera bag?

By removing all of these obstacles, and using as little equipment and material as possible, has two benefits:
1. You become so intimately familiar with the equipment that you don't even have to think about it. Your reaction to the subject matter in front of you is instinctive, because you can feel, like a domino chain reaction of a split second, what needs to happen. That takes into account all sorts of lighting scenarios, compositional elements, how to treat light and so on, because you are so familiar with your materials that you know these things like the back of your hand.
2. As a result of being so familiar with your materials and what happens to them at the time of processing and printing, you actually get more performance out of them. You have to use your materials a lot, break rules with them, and go way beyond their limitations in order to know everything there is to know about them. That takes time. Lots of time. Years even.

If you're not able to see the advantages of doing this, then you could probably benefit from trying it yourself. I've done it for six months and found it tremendously rewarding. I plan on doing it again to see if I can learn more.

"Often moments come looking for us". - Robert Frank

"Make good art!" - Neil Gaiman

"...the heart and mind are the true lens of the camera". - Yousuf Karsh